Second Narrows Water Supply Tunnel - Metro Vancouver · 2017-09-15 · Tunnel Details •...
Transcript of Second Narrows Water Supply Tunnel - Metro Vancouver · 2017-09-15 · Tunnel Details •...
Second Narrows Water Supply TunnelUTILITIES COMMITTEE PRESENTATIONFrank Huber, DirectorMAJOR PROJECTS, MANAGEMENT SYSTEMSAND UTILITY SERVICES, WATER SERVICES
Vanessa Anthony, Program ManagerPUBLIC INVOLVEMENT, WATER SERVICES
July 13, 201722130596
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Project Background• Meet growth needs and provide
long-term capacity south of Burrard Inlet.
• Designed to withstand and remain operational following a major earthquake.
• Provide protection against harbourscour and other marine activities.
• Replaces existing crossings.
North Shaft
Tunnel
South Shaft
Existing Crossings
District of North Vancouver
City of Burnaby
Burrard Inlet
Tunnel Alignment and Profile
Tunnel AlignmentNorth Shaft Site
Sedimentary BedrockSoil Units
South Shaft Site
Elev
atio
n (m
)
-140 m
-120 m
-100 m
-80 m
-60 m
-40 m
-20 m
0 m
20 m
40 m
60 m
-140 m
-120 m
-100 m
-80 m
-60 m
-40 m
-20 m
0 m
20 m
40 m
60 m
-100 m 0 m 100 m 200 m 300 m 400 m 500 m 600 m 700 m 800 m 900 m 1000 m 1100 m
Tunnel Details• Pressurized TBM• 1.1 km long inclined tunnel • One vertical curve • Tunnel grades: 0.1%, 3%• Approx. 60 m deep• Segmental lining• 5.8 m inside diameter• 3 carrier pipes One 1.5 m diameter main Two 2.4 m diameter mains
1.5 m diameter
2.4 m diameter
North Shaft Site Construction Area
North Shaft
Riverside Drive
South Shaft Site Construction Area
South Shaft
South Valve Chamber
• Metro Vancouver is committed to minimizing the impacts of its large infrastructure projects on the community Identify values, key considerations, and concerns
Identify potential project impacts early in the process and to ensure stakeholder concerns and interests are considered as part of project planning
Identify areas where public input can add value and where the project can benefit the community
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Consultation & Communications Approach
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Consultation & Communications Strategy
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Schedule Phase 2017 2018 2019 2020 2021 2022 2023
Detailed Design
Permitting
Consultation and Communications
ConstructionProcurement
Construction
Thank you.
Effluent Heat RecoveryAT NORTH SHORE WASTEWATER TREATMENT PLANTJeff CarmichaelDIVISION MANAGER, UTILITY RESEARCH & INNOVATION
Utilities Committee, 13 July 2017
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• Metro Vancouver has committed to pursuing corporate greenhouse gas neutrality
• by signing the Climate Action Charter in 2007
• by endorsing the 2010 Corporate Climate Action Plan
• New sources of GHG reductions are required to achieve this
Climate action commitment
5,540
14,140
2016 corporate GHG emissions (tonnes)
Liquid Waste utilityMetro Vancouver remainder
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NSWWTP Project Objectives
Secondary Wastewater Treatment
Sustainability Environmental, Social, Economic
Integrated Resource Recovery
Community Integration
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Integrated resource recovery opportunitiesOptional opportunities not included in $700M project budget
1. Reclaimed water ($1.2M) – now planned2. Phosphorus recovery ($8.5M) – business
case not currently viable3. Effluent heat (net $16.9M) –
recommended (this report)
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Project Scope
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Energy Centre: GVS&DD
District Energy System: Lonsdale Energy
Distribution Piping: Lonsdale Energy
• Proximity to Lonsdale Energy Corporation• Only respondent to call for expression of interest
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Cost of effluent heat opportunity• Optional item in ADApT bid
• Cost efficiencies by building at same time
Item Capital CostADApT contract:effluent heat recovery facility
$15,926,000
BC Hydro infrastructure $2,000,000
Subtotal: spending authority reqd $17,926,000
Potential BC Hydro grant -$1,000,000
Net cost to Metro Vancouver $16,926,000
LEC distribution piping system $3,543,000
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Benefits
• GHG-neutral Liquid Waste utility
• Cost-effective GHG project
Net capital investment
Annual GHG credits (tonnes/yr)
GVS&DD $16,926,000 5,700BC Hydro (due to grant)
$1,000,000 300
LEC $3,543,000 1,200
5,540
14,140
2016 corporate GHG emissions (tonnes)
Liquid Waste utilityMetro Vancouver remainder
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NSWWTP budget• Total project cost $700 million
• Effluent heat opportunity is optional item and not included
• $17.9 million spending authority required for effluent heat system
• Some or all of this cost may be accommodated in $700 million if contingency allows
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2016 GVS&DD Environmental Management & Quality ControlANNUAL REPORT
Andjela Knezevic-StevanovicDIRECTOR ENVIRONMENTAL MANAGEMENT & QUALITY CONTROL, LIQUID WASTE SERVICES
Utilities Committee - July 13, 201721700786
• Regulatory requirement• Documents the performance, operational effectiveness
and regulatory compliance of wastewater treatment plants (WWTPs)
• Assesses the environmental health of water bodies that are receiving liquid waste discharges from Metro Vancouver
• Provides information to the public
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Environmental Management & Quality Control Annual Report
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3 Secondary - freshwater discharge
2 Primary – marine discharge
Metro Vancouver’s WWTPs
Lions Gate WWTP
Lulu Island WWTP
North Langley WWTP
Annacis Island WWTP
Iona Island WWTP
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• Over 438 billion litres of wastewater treated in 2016
Metro Vancouver’s WWTPs
• About 51,400 samples collected• Over 195,000 analyses performed• About 54,200 tonnes of suspended
solids (TSS) and over 51,400 tonnesof biochemical oxygen demand (BOD) removed
• Treatment efficiency met or exceeded expectations and was consistent with previous years
WWTP Performance Review
WWTP% BOD
Reduction% TSS
Reduction
Iona Island 44 58
Lions Gate 46 67
Annacis Island 95 94
Lulu Island 98 98
Northwest Langley 95 93
• WWTPs consistently complied with the Operational Certificate requirements
• Non-compliance events were caused by extremely high flows through the plants during wet weather events or by BC Hydro power interruption
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WWTP Regulatory Compliance Review
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Biosolids Quality Monitoring
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Effluent Toxicity Monitoring
• Characterization for all five WWTPs started in 2014• Included substances:
• Pharmaceuticals and personal care products (PPCPs)• Surfactants• Hormones and sterols• Polybrominated diphenyl ethers (PBDEs)• Polychlorinated biphenyls (PCBs)• Polyaromatic hydrocarbons (PAHs)• Phenolic compounds• Volatile organic compounds (VOCs)• Organochlorine pesticides (OCPs)
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Endocrine Disrupting Substances and Trace Organics Monitoring
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Beach Monitoring• Bacteriological water quality monitored at 41
beaches
• Bathing beaches met the primary-contact recreation guideline during the bathing beach season except for Wreck Beach Trail #7 (Oasis)
• False Creek, a non-bathing beach area, consistently met the applicable secondary-contact recreation guideline throughout the season
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Receiving Environment Monitoring
• Comprehensive monitoring of environmental health of water, sediments and organisms in the vicinity of the WWTP outfalls
• Water quality objectives and guidelines for the receiving waters were largely met
• Monitoring results for sediment effects around two primary WWTP outfalls were similar to previous years
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Ambient Environment Monitoring• 2016 ambient environment monitoring
programs:• Strait of Georgia (water)• Burrard Inlet (water)• Fraser River (water and sediments)• Boundary Bay (water and sediments)• Comprehensive program review
for Burrard Inlet
• Metro Vancouver WWTPs operate in compliance with the applicable regulatory requirements
• Metro Vancouver WWTPs continue to meet performance expectations and consistently provide an ongoing benefit to the region by reducing contaminant loading to the environment
• Various monitoring programs confirm that WWTPs are operating efficiently and with no adverse effect on human health and the environment
• Regional liquid waste discharges continue to be effectively managed in a manner that is protective of human and aquatic life
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Conclusions
Questions?